Tbg,
Thanks for sharing your experiences. I am familiar with the LSA stands. I assembled a pair for a friend of mine. They are nice looking. And the fact that they come with the filler is kinda cool. But I would hardly consider them a "Solid" stand. At least the ones that I put together. They were a combination of wood and extruded aluminum, held together by short metal screws. Hardly what I would consider sturdy. So I'm not surprised by your experience. I know flimsy stands are not something you'd expect a lot of performance from. But my example is far from that.
Beyond that, adding a device like the still points is a whole other ball game anyway. Besides the fact that they are an isolation device, they are items beyond the scope of the stand.
So my curiosity still stands. How is it that the stand itself, IF built solidly (like Sound Anchors), makes that much difference and how does $1500 for threaded brass increase performance over solid welded steel? (~$350) We could argue the effectiveness of isolation versus coupling. But as far as I'm understanding so far that is outside the scope of the stand itself.
Anyway, I just want to reiterate that I'm not trying to be combative. I'm just looking for reasons as to why one stand will be all that different from another. (Assuming it is solid and well built!) Always looking to learn something!